CN109617428A - A kind of Switching Power Supply and motor driven systems - Google Patents
A kind of Switching Power Supply and motor driven systems Download PDFInfo
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- CN109617428A CN109617428A CN201811640183.8A CN201811640183A CN109617428A CN 109617428 A CN109617428 A CN 109617428A CN 201811640183 A CN201811640183 A CN 201811640183A CN 109617428 A CN109617428 A CN 109617428A
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- 238000005070 sampling Methods 0.000 claims abstract description 23
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- 238000004804 winding Methods 0.000 claims description 63
- 230000001105 regulatory effect Effects 0.000 claims description 31
- 230000005611 electricity Effects 0.000 claims description 16
- 238000001914 filtration Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 9
- 238000010168 coupling process Methods 0.000 claims description 9
- 238000005859 coupling reaction Methods 0.000 claims description 9
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- 238000002955 isolation Methods 0.000 claims description 8
- 238000005516 engineering process Methods 0.000 abstract description 3
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- 230000008859 change Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
- H02M7/068—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode mounted on a transformer
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present embodiments relate to switch power technology field more particularly to a kind of Switching Power Supply and motor driven systems.Switching Power Supply includes: resonance circuit, is used for output loading voltage；Voltage mode conversion circuit, connect with resonance circuit, and for sampling load voltage, also, in response to the mode tuning instruction of input, load voltage is converted to reference voltage corresponding with mode tuning instruction；Feed circuit is connect with resonance circuit and voltage mode conversion circuit respectively, for generating feedback current according to reference voltage；Voltage control circuit is used for respectively with feed circuit and resonance circuit connection according to feedback current, the load voltage that adjusting resonance circuit exports to preset voltage value.It is different from the prior art, in the case where converting voltage mode, Switching Power Supply Comparision is stable and conversion speed is fast.
Description
Technical field
The present embodiments relate to switch power technology field more particularly to a kind of Switching Power Supply and motor driven systems.
Background technique
It is some load have multiple voltage operating mode, for example, direct current generator can by a variety of load voltages driving and work
Make the state in corresponding revolving speed.
Change the voltage operation mode of load, software form is usually used in conventional practice, by changing driving load
Control logic, and then loaded work piece is adjusted under corresponding voltage, for example, single-chip microcontroller changes pwm signal when adjusting motor speed
Duty ratio is put down with changing shutdown and the turn-on time of the pwm signal control switch pipe, and then changing to be exported by switch controlled
The size of equal voltage, changes the revolving speed of motor with this.
However, the voltage being applied on motor is also a switch shape since software is using PWM control mode
Comparatively state is that machine air gap is energized, especially the slow-speed of revolution when will appear rotary speed unstabilization and determine state, therefore loaded changing
Voltage operation mode when, conventional practice is unstable.
Summary of the invention
The embodiment of the present invention provides a kind of Switching Power Supply and motor driven systems, the operation is stable.
The embodiment of the present invention solve its technical problem the following technical schemes are provided:
A kind of Switching Power Supply, comprising:
Resonance circuit is used for output loading voltage；
Voltage mode conversion circuit is connect with the resonance circuit, for sampling the load voltage, also, in response to
The mode tuning instruction of input converts the load voltage to reference voltage corresponding with the mode tuning instruction；
Feed circuit is connect with the resonance circuit and the voltage mode conversion circuit respectively, for according to the ginseng
Voltage is examined, feedback current is generated；
Voltage control circuit is connect with the feed circuit and the resonance circuit respectively, for according to the feedback electricity
Stream adjusts the load voltage of resonance circuit output to preset voltage value.
Optionally, under selected voltage mode, the mode tuning instruction is continual high level or low level.
Optionally, the resonance circuit includes:
Primary winding circuit is connect, for storing energy with the voltage control circuit；
Secondary winding circuit is coupled with the armature winding, is used for output loading voltage, wherein the voltage control electricity
Road adjusts the storage energy of the primary winding circuit to preset energy value, to adjust the load according to the feedback current
Voltage is to preset voltage value.
Optionally, the voltage mode conversion circuit includes:
Bleeder circuit is connect with the secondary winding circuit, for the load voltage to be made voltage division processing；
Several switching circuits, each switching circuit include first node and second node, each switching circuit
And the bleeder circuit all shares the first node, the second node is described for receiving the mode tuning instruction
Mode tuning instruction is used to control the working condition of the switching circuit, by the current potential of the first node be biased in it is described
The corresponding reference voltage of mode tuning instruction.
Optionally, the feed circuit includes:
Optical coupling isolation circuit is connect with the secondary winding circuit, and the optical coupling isolation circuit includes optocoupler, the load
The corresponding electric current of voltage flows through the primary side of the optocoupler, and secondary side one end of the optocoupler is connect with the primary winding circuit, institute
The secondary side other end for stating optocoupler is connect with the voltage control circuit, for exporting the feedback current；
Current regulating circuit, including third node and fourth node, the third node are connect with the first node, institute
It states fourth node to connect with primary side one end of the optocoupler, the current regulating circuit is used for the reference according to the first node
Voltage adjusts the electric current for flowing through the optocoupler primary side.
Optionally, the reference voltage is bigger, and the feedback current is bigger；
The reference voltage is smaller, and the feedback current is smaller.
Optionally, the voltage control circuit includes:
Current rectifying and wave filtering circuit is connect with the primary winding circuit；
Control chip, respectively with the secondary side other end and the armature winding of the current rectifying and wave filtering circuit, the optocoupler
Circuit connection, the control chip are used to adjust according to the feedback current storage energy of the primary winding circuit to pre-
If energy value, to adjust the load voltage to preset voltage value.
Optionally, each switching circuit all includes switching tube and gear resistance, and the switching tube and the gear are electric
Resistance connection, when the mode tuning instruction controls switching tube conducting, electric current flows through the gear resistance.
The embodiment of the present invention solve its technical problem also the following technical schemes are provided:
A kind of motor driven systems, comprising:
The Switching Power Supply；
Controller is connect with the voltage mode conversion circuit in the Switching Power Supply, is used for sending mode regulating command；With
And
Motor is connect with the resonance circuit in the Switching Power Supply.
Optionally, the motor driven systems further include current sampling circuit, the current sampling circuit and the control
Device connection, for sampling the electric current for flowing through the motor, so that electric current of the controller according to sampling, controls the motor
Working condition.
Compared with prior art, in Switching Power Supply provided in an embodiment of the present invention, when converting voltage mode, by hard
Part mode, voltage mode conversion circuit convert load voltage to reference voltage corresponding with mode tuning instruction, feed circuit
Feedback current is generated according to reference voltage, voltage control circuit adjusts the load voltage of resonance circuit output according to feedback current
To preset voltage value.It is different from the prior art, in the case where converting voltage mode, Switching Power Supply Comparision stabilization and conversion speed
Fastly.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described.It should be evident that drawings described below is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of functional block diagram of motor driven systems provided in an embodiment of the present invention；
Fig. 2 is a kind of functional block diagram of Switching Power Supply provided in an embodiment of the present invention；
Fig. 3 be another embodiment of the present invention provides a kind of Switching Power Supply functional block diagram；
Fig. 4 is a kind of functional block diagram of current rectifying and wave filtering circuit provided in an embodiment of the present invention；
Fig. 5 is a kind of structural schematic diagram of Switching Power Supply provided in an embodiment of the present invention.
Specific embodiment
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail.
It should be noted that be expressed " being fixed on " another element when element, it can directly on the other element or therebetween
There may be one or more elements placed in the middle.When an element is expressed " connection " another element, it, which can be, directly connects
It is connected to another element or there may be one or more elements placed in the middle therebetween.Term used in this specification is " vertical
", " horizontal ", "left", "right", "inner", "outside" and similar statement for illustrative purposes only, and only expression is real
Positional relationship in matter, such as " vertical ", if certain positional relationship is because for the sake of realizing certain purpose and non-critical
Vertically, but substantially vertical, or vertical characteristic is utilized, then belong to described in this specification " vertical " scope.
Unless otherwise defined, technical and scientific term all used in this specification is led with technology of the invention is belonged to
The normally understood meaning of the technical staff in domain is identical.It is specific to be intended merely to description for used term in the description of the invention
Embodiment purpose, be not intended to limitation the present invention.Term "and/or" used in this specification includes one or more phases
Any and all combinations of the listed item of pass.
In addition, as long as technical characteristic involved in invention described below difference embodiment is not constituted each other
Conflict can be combined with each other.
Referring to Fig. 1, motor driven systems 10 include: Switching Power Supply 20, controller 30, motor 40, current sampling circuit
50 and current temperature sample circuit 60, controller 30 connect respectively with Switching Power Supply 20 and motor 40, current sampling circuit 50 divides
It is not connect with controller 30 and motor 40, current temperature sample circuit 60 is connect with controller and motor 40 respectively.
Switching Power Supply 20 is used to provide load voltage for motor 40, and load voltage driving motor 40 works.Switching Power Supply 20
It can work under multiple voltage mode, provide different loads voltage for motor 40, for example, load voltage is in 15 volts to 24 volts
Any value.
Switching Power Supply 20 can support any type of power supply to design, for example, Switching Power Supply 20 include inverse-excitation type switch power-supply,
Positive activation type Switching Power Supply, self-activated switch power supply or push-pull type Switching Power Supply etc..
Controller 30 is used as control core, can distinguish the working condition of control switch power supply 20 or motor 40.At this
In embodiment, controller 30 is used for 20 sending mode regulating command of Switching Power Supply, and Switching Power Supply 20 refers to according to the mode tuning
It enables, exports load voltage corresponding with mode tuning instruction, to change motor work in different rotating speeds state.For example, mode
Regulating command includes first mode regulating command, second mode regulating command and the third mode regulating command, wherein the first mould
The corresponding load voltage of formula regulating command is 24 volts, and second mode regulating command is 18 volts, and the third mode regulating command is 15 volts,
When controller 30 sends first mode regulating command to Switching Power Supply 20, Switching Power Supply 20 just exports 24 volts of load to motor
Voltage, with driving motor.When controller 30 sends second mode regulating command to Switching Power Supply 20, Switching Power Supply 20 is just to electricity
Machine exports 18 volts of load voltage, with driving motor.
And so on.
In some embodiments, under selected voltage mode, mode tuning instruction is continual high level or low electricity
It is flat, for example, mode tuning instruction is continuously high level under first voltage mode, Switching Power Supply 20 under the action of high level,
Persistently export 24 volts of load voltage.
Motor 40 by load voltage driving and the revolving speed that works under corresponding voltage mode.In the present embodiment, motor
40 be direct current generator.
Current sampling circuit 50 sends the electric current sampled to controller 30 for sampling the electric current for flowing through motor 40.Control
Device 30 processed controls the working condition of motor 40 according to the electric current of sampling.For example, the electricity when the electric current of sampling reaches motor rotation blockage
Stream, controller 30 control motor 40 and stop working.
Current sampling circuit 50 can use any circuit structure form, and such as Hall sensor is made of resistor network
Current sampling circuit, the current sampling circuit being made of metal-oxide-semiconductor combination resistance etc..
Current temperature sample circuit 60 is used for the temperature of 40 surrounding enviroment of sample motor, and sends sampling to controller 30
Temperature.Controller 30 controls the working condition of motor 40 according to the temperature of sampling.For example, when the electric current of sampling is greater than default temperature
When spending threshold value, controller 30 controls motor 40 and stops working.
Current temperature sample circuit 60 can be using the circuit being made of temperature sensor, temperature sensing device, for example, temperature passes
Sensor includes the sensor of positive temperature coefficient or negative temperature coefficient, and temperature sensing device includes triode etc. semiconductor devices.
In some embodiments, in addition to all kinds of circuits that motor driven systems described herein include, those skilled in the art
Member can voluntarily increase application function circuit according to the application demand of motor driven systems.
In some embodiments, referring to Fig. 2, Switching Power Supply 20 includes: resonance circuit 21, voltage mode conversion circuit
22, feed circuit 23 and voltage control circuit 24.
Resonance circuit 21 is used for output loading voltage, and in some embodiments, resonance circuit 21 can be used by resonance transformation
The circuit that device and filter circuit are constituted.
Voltage mode conversion circuit 22 is connect with resonance circuit 21, and voltage mode conversion circuit 22 is for sampling load electricity
Pressure, also, voltage mode conversion circuit 22 is also used to the mode tuning instruction in response to input, by load voltage convert to mould
The corresponding reference voltage of formula regulating command refers to for example, controller 30 sends second mode adjusting to voltage mode conversion circuit 22
It enables, load voltage of the voltage mode conversion circuit 22 just by motor Previous work at 24 volts is converted to second mode regulating command pair
Answer 20 volts of reference voltage, wherein the reference voltage can be according to business demand designed, designed.
Feed circuit 23 is connect with resonance circuit 21 and voltage mode conversion circuit 22 respectively, and feed circuit 23 is used for basis
Reference voltage generates feedback current, for example, corresponding feedback current is 0.5 peace when reference voltage is 20 volts；Reference voltage is
At 18 volts, corresponding feedback current is 0.4 peace；When reference voltage is 15 volts, corresponding feedback current is 0.2 peace etc..
Reference voltage can be converted into corresponding feedback current by feed circuit 23, can choose any appropriate electricity
Road.
Voltage control circuit 24 is connect with feed circuit 23 and resonance circuit 21 respectively, and voltage control circuit 24 is used for basis
Feedback current, the load voltage that adjusting resonance circuit 21 exports to preset voltage value.For example, feedback current is 0.5 ampere-hour, voltage
The storage energy that control circuit 24 adjusts the armature winding of the resonance transformer of resonance circuit 21 is W1, the storage of the armature winding
Energy W1 is released by secondary windings, to generate 20 volts of load voltage.Feedback current is 0.4 ampere-hour, voltage control electricity
The storage energy that road 24 adjusts the armature winding of the resonance transformer of resonance circuit 21 is W2, the storage energy W2 of the armature winding
It is released by secondary windings, to generate 18 volts of load voltage.
, can be equal with reference voltage it is understood that preset voltage value can be customized by users, it can not also be with
Reference voltage is equal.
Therefore, in Switching Power Supply provided in an embodiment of the present invention, when converting voltage mode, pass through hardware mode, voltage
Mode switching circuit 22 converts load voltage to reference voltage corresponding with mode tuning instruction, and feed circuit 23 is according to reference
Voltage generates feedback current, and voltage control circuit 24 adjusts load voltage that resonance circuit 21 exports to pre- according to feedback current
If voltage value.It is different from the prior art, in the case where converting voltage mode, Switching Power Supply Comparision is stable and conversion speed is fast.
In some embodiments, referring to Fig. 3, resonance circuit 21 includes: primary winding circuit 211 and secondary winding circuit
212。
Primary winding circuit 211 is connect with voltage control circuit 24, and primary winding circuit 211 is used to store energy, for example,
Voltage control circuit 24 handles alternating current, is converted into DC power supply, and the DC power supply is applied to primary winding circuit
211, wherein when voltage control circuit 24, which controls direct current, flows through primary winding circuit 211, energy is just stored in armature winding electricity
Road 211.When voltage control circuit 24, which controls direct current, is not passed through primary winding circuit 211, energy is just not stored in armature winding
Circuit 211.In some embodiments, voltage control circuit 24 by control flow through direct current flow through primary winding circuit 211 when
Between, and then control the size that primary winding circuit 211 stores energy.
Secondary winding circuit 212 is coupled with armature winding 211, and secondary winding circuit 212 is used for output loading voltage,
In, voltage control circuit 24 adjusts the storage energy of primary winding circuit 211 to preset energy value, to adjust according to feedback current
Load voltage is saved to preset voltage value.For example, feedback current is 0.5 ampere-hour, voltage control circuit 24 adjusts primary winding circuit
Preset energy value W3 is couple secondary winding circuit by 211 storage energy to preset energy value W3, primary winding circuit 211
212, so that secondary winding circuit 212 adjusts load voltage to preset voltage value.
Referring again to Fig. 3, voltage mode conversion circuit 22 includes: bleeder circuit 221 and several switching circuits 222.
Bleeder circuit 221 is connect with secondary winding circuit 212, and bleeder circuit 221 is used to load voltage making voltage division processing.
Switching circuit 222 includes first node P1 and second node P2, each switching circuit 222 and bleeder circuit 221
First node P1 is all shared, second node P2 is used for reception pattern regulating command, and mode tuning instruction is used for control switch circuit
The current potential of first node P1 is biased in reference voltage corresponding with mode tuning instruction, wherein open by 222 working condition
The working condition on powered-down road 222 includes on state and off state.For example, switching circuit 222 includes first switch circuit, the
Two switching circuits and third switching circuit, first mode regulating command control the work of first switch circuit on state, load
Voltage is biased to 24 volts after bleeder circuit 221 and first switch processing of circuit, by the current potential of first node P1.Second mould
Formula regulating command controls the work of second switch circuit on state, and load voltage passes through bleeder circuit 221 and second switch
After processing of circuit, the current potential of first node P1 is biased to 18 volts.The third mode regulating command controls the work of third switching circuit
In on state, load voltage is inclined by the current potential of first node P1 after bleeder circuit 221 and the processing of third switching circuit
It is set to 15 volts.
For another example fourth mode regulating command control first switch circuit work is in off state, load voltage is through excessive
After the processing of volt circuit 221, the current potential of first node P1 is biased to 16 volts.5th mode tuning instruction controls first switch circuit
Work is on state, and the 6th mode tuning instruction controls the work of second switch circuit on state, and load voltage is through excessive
After volt circuit 221, first switch circuit and second switch processing of circuit, the current potential of first node P1 is biased to 10 volts.
In some embodiments, each switching circuit 222 all includes switching tube and gear resistance, switching tube and gear resistance
Connection, in the conducting of mode tuning instruction control switch pipe, electric current flows through gear resistance.
Referring again to Fig. 3, feed circuit 23 includes: optical coupling isolation circuit 231 and current regulating circuit 232.
Optical coupling isolation circuit 231 is connect with secondary winding circuit 212, and optical coupling isolation circuit 231 includes optocoupler, load voltage
Corresponding electric current flows through the primary side of optocoupler, and secondary side one end of optocoupler is connect with primary winding circuit 211, the secondary side other end of optocoupler
It is connect with voltage control circuit 24, the secondary side of optocoupler is for exporting feedback current.
Current regulating circuit 232 includes third node P3 and fourth node P4, and third node P3 is connect with first node P1,
The connection of primary side one end of fourth node P4 and optocoupler, current regulating circuit 232 are used for the reference voltage according to first node P1, adjust
Throttle the electric current through optocoupler primary side, wherein reference voltage is bigger, and feedback current is bigger；Reference voltage is smaller, and feedback current is got over
It is small.When the electric current for flowing through optocoupler primary side encounters variation, the feedback current for flowing through optical coupling secondary edges changes proportionally to therewith, for example,
The electric current for flowing through optocoupler primary side becomes larger, and feedback current becomes larger；The electric current for flowing through optocoupler primary side becomes smaller, and feedback current becomes smaller.When anti-
Supply current variation, voltage control circuit can be according to feedback current, by load voltage to preset voltage value, the preset voltage value
It is associated with reference voltage, for example, reference voltage is tuned up, preset voltage value is just turned down；Reference voltage is turned down, predeterminated voltage
Value is just tuned up.Certainly, in some embodiments, corresponding circuit structure can also be used, so that: reference voltage is adjusted
Small, preset voltage value is just turned down；Reference voltage is tuned up, and preset voltage value is just tuned up.
Current regulating circuit 232 can be using the circuit being made of model KA431A chip.
Referring again to Fig. 3, voltage control circuit 24 includes: current rectifying and wave filtering circuit 241 and control chip 242.
Current rectifying and wave filtering circuit 241 is connect with primary winding circuit 211.Current rectifying and wave filtering circuit 241 be used for by external power supply into
The processing of row rectifying and wave-filtering, and DC power supply is applied on primary winding circuit 211 by treated.
Chip 242 is controlled to connect with current rectifying and wave filtering circuit 241, the secondary side other end of optocoupler and primary winding circuit respectively
It connects, control chip 242 is used to adjust the storage energy of primary winding circuit according to feedback current to preset energy value, to adjust
Load voltage is to preset voltage value.
Control chip 242 can be using the circuit being made of model TOP264VG chip.
In order to elaborate Switching Power Supply provided in an embodiment of the present invention, Switching Power Supply is made below in conjunction with Fig. 4 and Fig. 5
It is described in detail, as described below:
Referring to Fig. 4, current rectifying and wave filtering circuit 241 includes filter circuit 2411 and rectification circuit 2422, filter circuit 2411
For external power supply to be filtered, and by the power delivery after filtering processing to rectification circuit 2422, rectification circuit 2422
Power supply after filtering processing is made into rectification processing, exports DC power supply.
Referring to Fig. 5, primary winding circuit 211 include the first winding circuit 2111 and the second winding circuit 2112, first
2111 one end of winding circuit is applied DC power supply, and 2111 other end of the first winding circuit is connected to control chip 242.Second around
Group circuit 2112 is connect with optocoupler U1 pair side one end in optical coupling isolation circuit 231, and the optocoupler U1 pair side other end is connected to control
Chip 242.
Secondary winding circuit 212 includes tertiary winding circuit 2121 and load filter circuit 2122, tertiary winding circuit
2121 release energy, and load filter circuit 2122 loads on load after being filtered to out-put supply.
Current regulating circuit 232 includes TOP264VG chip, and bleeder circuit 221 includes resistance R1 and R2, and voltage mode turns
Changing circuit 22 includes first switch circuit 2221, second switch circuit 2222 and third switching circuit 2223, first switch circuit
2221 include first switch tube Q1 and the first gear resistance R3, and second switch circuit 2222 includes second switch Q2 and second gear
Position resistance R4, third switching circuit 2223 include third switching tube Q3 and third gear resistance R5.
The working principle of conversion voltage mode detailed below:
Controller 30 persistently sends high level signal to first switch tube Q1 by second node P2, and first switch tube Q1 is led
Logical, the cut-off of rest switch pipe, the corresponding electric current of load voltage flows through R1, R2 and R3, so that in first node P1 (third node
P3 reference voltage) is biased to 22 volts, at this point, the load voltage that secondary winding circuit 212 exports is 22 volts.
When converting voltage mode, controller 30 sends high level signal to second switch Q2 by second node P2,
Second switch Q2 conducting, the cut-off of rest switch pipe, the corresponding electric current of load voltage flows through R1, R2 and R4, so that in first segment
The reference voltage of point P1 (third node P3) is biased to 20 volts.Since the voltage of the reference edge of TOP264VG chip becomes smaller, flow through
The current reduction of optocoupler U1 primary side, the feedback current for flowing through optocoupler U1 pair side decrease, and control chip 242 is according to feedback electricity
Stream controls the storage energy of primary winding circuit 211 to preset energy value, to adjust load voltage to 20 volts.
When continuing to convert voltage mode, controller 30 sends high level letter to third switching tube Q3 by second node P2
Number, third switching tube Q3 conducting, the cut-off of rest switch pipe, the corresponding electric current of load voltage flows through R1, R2 and R5, so that first
The reference voltage of node P1 (third node P3) is biased to 18 volts.Since the voltage of the reference edge of TOP264VG chip becomes smaller, stream
Current reduction through optocoupler U1 primary side, the feedback current for flowing through optocoupler U1 pair side decrease, and control chip 242 is according to feedback electricity
Stream controls the storage energy of primary winding circuit 211 to preset energy value, to adjust load voltage to 18 volts.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；At this
It under the thinking of invention, can also be combined between the technical characteristic in above embodiments or different embodiment, step can be with
It is realized with random order, and there are many other variations of different aspect present invention as described above, for simplicity, they do not have
Have and is provided in details；Although the present invention is described in detail referring to the foregoing embodiments, the ordinary skill people of this field
Member is it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to part of skill
Art feature is equivalently replaced；And these are modified or replaceed, each reality of the present invention that it does not separate the essence of the corresponding technical solution
Apply the range of a technical solution.
Claims (10)
1. a kind of Switching Power Supply characterized by comprising
Resonance circuit is used for output loading voltage；
Voltage mode conversion circuit is connect with the resonance circuit, for sampling the load voltage, and in response to the mould of input
Formula regulating command converts the load voltage to reference voltage corresponding with the mode tuning instruction；
Feed circuit is connect with the resonance circuit and the voltage mode conversion circuit respectively, for according to the reference electricity
Pressure generates feedback current；
Voltage control circuit is connect with the feed circuit and the resonance circuit respectively, for adjusting according to the feedback current
The load voltage of resonance circuit output is saved to preset voltage value.
2. Switching Power Supply according to claim 1, which is characterized in that under selected voltage mode, the mode tuning
Instruction is continual high level or low level.
3. Switching Power Supply according to claim 1, which is characterized in that the resonance circuit includes:
Primary winding circuit is connect, for storing energy with the voltage control circuit；
Secondary winding circuit is coupled with the armature winding, for exporting the load voltage, wherein the voltage control electricity
Road adjusts the storage energy of the primary winding circuit to preset energy value, to adjust the load according to the feedback current
Voltage is to the preset voltage value.
4. Switching Power Supply according to claim 3, which is characterized in that the voltage mode conversion circuit includes:
Bleeder circuit is connect with the secondary winding circuit, for the load voltage to be made voltage division processing；
Several switching circuits, each switching circuit include first node and second node, each switching circuit and
The bleeder circuit all shares the first node, and the second node is for receiving the mode tuning instruction, the mode
Regulating command is used to control the working condition of the switching circuit, and the current potential of the first node is biased in and the mode
The corresponding reference voltage of regulating command.
5. Switching Power Supply according to claim 4, which is characterized in that the feed circuit includes:
Optical coupling isolation circuit is connect with the secondary winding circuit, and the optical coupling isolation circuit includes optocoupler, with the load electricity
Corresponding electric current is pressed to flow through the primary side of the optocoupler, secondary side one end of the optocoupler is connect with the primary winding circuit, described
The secondary side other end of optocoupler is connect with the voltage control circuit, for exporting the feedback current；
Current regulating circuit, including third node and fourth node, the third node are connect with the first node, and described
Four nodes are connect with primary side one end of the optocoupler, and the current regulating circuit is used for the reference electricity according to the first node
Pressure adjusts the electric current for flowing through the primary side of the optocoupler.
6. Switching Power Supply according to claim 5, which is characterized in that
The reference voltage is bigger, and the feedback current is bigger；
The reference voltage is smaller, and the feedback current is smaller.
7. Switching Power Supply according to claim 5, which is characterized in that the voltage control circuit includes:
Current rectifying and wave filtering circuit is connect with the primary winding circuit；
Control chip, respectively with the secondary side other end and the primary winding circuit of the current rectifying and wave filtering circuit, the optocoupler
Connection, the control chip is for according to the feedback current, adjusting the storage energy of the primary winding circuit to pre-
If energy value, to adjust the load voltage to preset voltage value.
8. Switching Power Supply according to claim 4, which is characterized in that each switching circuit all includes switching tube and shelves
Position resistance, the switching tube are connect with the gear resistance, when the mode tuning instruction controls switching tube conducting, electricity
Stream flows through the gear resistance.
9. a kind of motor driven systems characterized by comprising
Switching Power Supply as claimed in any one of claims 1 to 8；
Controller is connect with the voltage mode conversion circuit in the Switching Power Supply, is used for sending mode regulating command；And
Motor is connect with the resonance circuit in the Switching Power Supply.
10. motor driven systems according to claim 9, which is characterized in that the motor driven systems further include electric current
Sample circuit, the current sampling circuit are connect with the controller, for sampling the electric current for flowing through the motor, so that described
Controller controls the working condition of the motor according to the electric current of sampling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640183.8A CN109617428B (en) | 2018-12-29 | 2018-12-29 | Switch power supply and motor driving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811640183.8A CN109617428B (en) | 2018-12-29 | 2018-12-29 | Switch power supply and motor driving system |
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| CN109617428A true CN109617428A (en) | 2019-04-12 |
| CN109617428B CN109617428B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811640183.8A Active CN109617428B (en) | 2018-12-29 | 2018-12-29 | Switch power supply and motor driving system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113162511A (en) * | 2021-04-20 | 2021-07-23 | 江西省万佳通照明科技有限公司 | Broken wall machine integrated circuit |
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| CN105071662A (en) * | 2015-08-26 | 2015-11-18 | 矽力杰半导体技术(杭州)有限公司 | Switching power supply control circuit in quasi-resonant mode and control method |
| CN209329976U (en) * | 2018-12-29 | 2019-08-30 | 深圳和而泰小家电智能科技有限公司 | A kind of Switching Power Supply and motor driven systems |
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| US4008423A (en) * | 1975-02-11 | 1977-02-15 | Gould Inc. | Electrically propelled vehicle |
| CN101801136A (en) * | 2010-03-17 | 2010-08-11 | 上海大学 | High-efficiency LED constant current driving circuit |
| CN103841687A (en) * | 2012-11-20 | 2014-06-04 | 深圳科士达科技股份有限公司 | Inverter controller and driving circuit |
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| CN113162511A (en) * | 2021-04-20 | 2021-07-23 | 江西省万佳通照明科技有限公司 | Broken wall machine integrated circuit |
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|---|---|
| CN109617428B (en) | 2024-04-09 |
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